topic Re: defunct prcesses in Operating System - HP-UX

defunct prcesses

guru_1 — Wed, 27 Feb 2002 18:22:16 GMT

Hi,
I have a 11.0 n class system.I am facing following problems

1)i see no of defunct processes very often on the system
2)my automounter hangs somwtimes
3)Plus no. of times it has happened that i am not able to kill certain procsses using kill -9 . so i had to reboot the system

can anybody suggest whats the solution...

thnks

Re: defunct prcesses

harry d brown jr — Wed, 27 Feb 2002 18:33:56 GMT

Processes that "become" defunct (zombies) are usually caused by bad programming practices and can be fixed by correcting the program. Zombies are dead, hence you can not kill them, only burning their dead bodies by doing a reboot will rid your system of them.

Automounter==stupid idea therefore it rapidly approaches /dev/null! But I realize it's used quite a bit. Do you have your system PATCHED up to date? Do you have a trusted system, using NIS, what kind of clients?

live free or die
harry

Re: defunct prcesses

harry d brown jr — Wed, 27 Feb 2002 19:37:52 GMT

kuls,

This might help also

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x376efd3f91d3d5118ff40090279cd0f9,00.html

and this is very good:
http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x1e6f84534efbd5118ff40090279cd0f9,00.html

live free or die
harry

Re: defunct prcesses

James George_1 — Wed, 27 Feb 2002 21:18:37 GMT

Hi

The no of dfunc process shoots up sometime due to some programs which is in a "loop", unable to come out !! the only way out is to keep on killing the dfunc process . And if you can findout the databse which is creating these processes, bouncing the database will also help in stopping the dfunc process.

I had the same problem, last week. the reason for that was, one of the application (oracle database) was in process and it was unable to complete sucessfully because somebody had removed a directory from the system and the application was trying to access the directory.The program was still running waiting to access the files from the directory..)
Just an example...work with DBA's to sort out if you do not want to keep on killing ...

Best of Luck.
James

Re: defunct prcesses

guru_1 — Thu, 28 Feb 2002 06:51:16 GMT

Thanks James and Harry , I will try out these options.

thnks